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Asset Retirement Obligations (Tables)
 6 Months Ended
Jun. 30, 2015
Asset Retirement Obligation Disclosure [Abstract]  
Schedule of Change in Asset Retirement Obligation
The changes to AROs for Dominion and Virginia Power during 2014 and 2015 are presented below. There were no significant changes to Dominion Gas' AROs.
 
Amount

(millions)
 
Dominion
 
AROs at December 31, 2013(1)
$
1,578

Obligations incurred during the period
40

Obligations settled during the period
(82
)
Revisions in estimated cash flows(2)
102

Accretion
81

Other
(5
)
AROs at December 31, 2014(1)
$
1,714

Obligations incurred during the period(3)
306

Obligations settled during the period
(38
)
Revisions in estimated cash flows(3)
34

Accretion
44

Other
(1
)
AROs at June 30, 2015(1)
$
2,059

Virginia Power
 
AROs at December 31, 2013
$
689

Obligations incurred during the period
28

Obligations settled during the period
(1
)
Revisions in estimated cash flows(2)
108

Accretion
37

Other
(6
)
AROs at December 31, 2014(4)
$
855

Obligations incurred during the period(3)
288

Obligations settled during the period
(2
)
Revisions in estimated cash flows(3)
34

Accretion
23

AROs at June 30, 2015(4)
$
1,198

(1)
Includes $94 million, $81 million and $247 million reported in other current liabilities at December 31, 2013, December 31, 2014 and June 30, 2015, respectively.
(2)
Relates primarily to a shift of the delayed planned date on which the DOE is expected to begin accepting spent nuclear fuel.
(3)
Primarily reflects future ash pond and landfill closure costs at certain utility generation facilities. See Note 16 for further information.
(4)
Includes $7 million and $180 million reported in other current liabilities at December 31, 2014 and June 30, 2015, respectively.